Sendol is a strong Korean 5d amateur player. He has been offered a 6d certificate, and he once aspired to become a pro. He is a professional baduk teacher in Seoul. His best ex-students are Hong Jangsik, Korean 4P, and Kim Taehyang, Korean 1P.
On KGS, he plays and teaches under various nicks. As Sendol, he is a KGS teacher. He puts a lot of pressure on reading - and asks his students to learn foremostly life&death, various tesujis - but also other aspects like fuseki, josekis etc. His own knowledge of josekis seems to be endless.
His playing accounts include Renix, and
Charm. Playing as Charm, he was recently the first one to defeat Tartrate on KGS -
Tartrate-Charm. Breakfast has commented Renix's win over
Sylpheed on
Go4Go.
If you want contact him, see his info on KGS.
Interested in baduk books? If so, pls visit at http://www.badukbooks.com/